2008 Mercedes-Benz A vs. 2007 Opel Signum
To start off, 2008 Mercedes-Benz A is newer by 1 year(s). Which means there will be less support and parts availability for 2007 Opel Signum. In addition, the cost of maintenance, including insurance, on 2007 Opel Signum would be higher. At 1,990 cc (4 cylinders), 2008 Mercedes-Benz A is equipped with a bigger engine. In terms of performance, 2007 Opel Signum (148 HP @ 4000 RPM) has 67 more horse power than 2008 Mercedes-Benz A. (81 HP @ 4200 RPM) In normal driving conditions, 2007 Opel Signum should accelerate faster than 2008 Mercedes-Benz A. With that said, vehicle weight also plays an important factor in acceleration. 2007 Opel Signum weights approximately 288 kg more than 2008 Mercedes-Benz A. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Both vehicles are front wheel drive (FWD). Which offers better traction when its slippery than rear wheel drive vehicles. With that said, do keep in mind that many other factors such as speed and the wear on your tires can also have significant impact on traction and control. Let's talk about torque, 2007 Opel Signum (315 Nm @ 2000 RPM) has 135 more torque (in Nm) than 2008 Mercedes-Benz A. (180 Nm @ 1400 RPM). This means 2007 Opel Signum will have an easier job in driving up hills or pulling heavy equipment than 2008 Mercedes-Benz A.
Compare all specifications:
| 2008 Mercedes-Benz A | 2007 Opel Signum | |
| Make | Mercedes-Benz | Opel |
| Model | A | Signum |
| Year Released | 2008 | 2007 |
| Body Type | Hatchback | Hatchback |
| Engine Position | Front | Front |
| Engine Size | 1990 cc | 1909 cc |
| Engine Cylinders | 4 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 4 valves | 2 valves |
| Horse Power | 81 HP | 148 HP |
| Engine RPM | 4200 RPM | 4000 RPM |
| Torque | 180 Nm | 315 Nm |
| Torque RPM | 1400 RPM | 2000 RPM |
| Engine Bore Size | 83 mm | 82 mm |
| Engine Stroke Size | 92 mm | 90.4 mm |
| Engine Compression Ratio | 18.0:1 | 18.0:1 |
| Fuel Type | Diesel | Diesel |
| Top Speed | 170 km/hour | 209 km/hour |
| Acceleration 0-100mph | 15 seconds | 10.5 seconds |
| Drive Type | Front | Front |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 3 doors | 5 doors |
| Vehicle Weight | 1325 kg | 1613 kg |
| Vehicle Length | 3840 mm | 4640 mm |
| Vehicle Width | 1770 mm | 1800 mm |
| Vehicle Height | 1600 mm | 1470 mm |
| Wheelbase Size | 2570 mm | 2840 mm |
| Fuel Consumption Overall | 4.9 L/100km | 6.1 L/100km |
| Fuel Tank Capacity | 54 L | 60 L |
